The stupidity of trying to "fix" DHCPv6
jfbeam at gmail.com
Tue Jun 14 15:30:11 CDT 2011
On Tue, 14 Jun 2011 04:00:22 -0400, Owen DeLong <owen at delong.com> wrote:
> You would need an AWFUL lot of hosts for this to add up to a few 100pps
> (or even 10pps) of multicast traffic.
You're missing the point... most WAPs are horrible with multicast. It
doesn't matter if it's v4 or v6, at L2, multicast is multicast.
At 100pps the WAP disappears from the network. "It's dead, Jim!" In many
cases, a single multicast packet is enough to disrupt traffic flow as the
AP stops to fire the multicast frame, individually, at each associated
As others have pointed out, IPv6 uses multicast all over the place.
DHCPv6 is just one of many sources.
All we're saying is DHCPv6 should be like DHCPv4... have a backoff period
and eventually give up entirely. (yes, there are v4 agents that continue
to try, i.e. restart every 5min, etc.)
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